#include "int.H"

void system_int()
{
P0 = 0XFF;
P2 = P2 &0X1F |0X80;
P2 &= 0X1F;
	
P0 = 0X00;
P2 = P2 &0X1F |0XA0;
P2 &= 0X1F;





}